“This is a fantastic test for us,” Klopp wrote in This is Anfield, “a big challenge, because it doesn’t just test our ability, our skill, our fitness; it will test the most critical attribute of any side that wants to be successful – our mentality.”

“How all of us – players, staff and supporters – approach tonight will tell me more about where we are in our development than any Premier League game against a Manchester City, United, Spurs and so on.”

Klopp wants his side to send a message to the other teams in the competition, including Bayern Munich.

The Bundesliga champions also won their first leg 5-0 with braces from Robert Lewandowski and Thomas Muller making easy work of Besiktas at the Allianz Arena.

The 32-year-old midfielder is the unlikely figure at the top of the assist charts in Europe.

With fellow Premier League residents Kevin De Bruyne and Dele Alli leading the chasing pack, Milner will be hoping to stretch his lead and establish himself as the most productive playmaker in the competition.

A 6-0 win would see Liverpool equal Bayern’s record — a big ask but not impossible given the circumstances.

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